Results 71 to 80 of about 1,203,376 (162)

Simulated & theoretical SNR in passive bistatic noise radar processing [PDF]

2016 IEEE Radar Conference (RadarConf), 2016
The theoretical output signal-to-noise ratio (SNR) values computed for cross-correlation, least-squares (LS) and various versions of the least mean square (LMS) algorithm have been found to agree with the respective output SNRs exhibited by range profile estimates generated by these algorithms in Matlab when the transmitted noise waveform's spectrum is
Callahan, Michael J., Rigling, Brian D., Rangaswamy, Muralidhar   +2 more
openaire   +2 more sources

Impacts of Atmospheric Rivers in Central Greenland: Snowfall, Clouds, and Atmospheric State

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 2, 28 January 2026.
Abstract Atmospheric rivers (ARs) are long bands of strong horizontal water vapor transport responsible for over 90% of total integrated vapor transport (IVT) in extratropical and polar regions. Using a 12‐year record (2010–2022) of ground‐based remote sensing, radiosonde, snow stake, and reanalysis data from Summit Station, Greenland, we quantify the ...
A. E. Wedum, C. Pettersen, H. Guy, M. R. Gallagher, M. D. Shupe, K. S. Mattingly   +5 more
wiley   +1 more source

Maritime surveillance using GSM passive radar

, 2022
S.76-82The application of GSM based passive radar to maritime surveillance is demonstrated by the results of a campaign, that has been carried out around the Bay of Mecklenburg.
Nickel, U., Zemmari, R., Daun, M.
core   +1 more source

An Improved Extensive Cancellation Method for Clutter Removal in Passive Bistatic Radar

Sensors
Passive bistatic radar experiences serious clutter echo interference problems; the target echo is submerged by the sidelobes of the strong clutter echoes.
Gang Chen, Siyuan Su, Dandan Zhang, Sujun Wang, Yifan Ping, Fu Li   +5 more
doaj   +1 more source

A Modified Hierarchical Vision Transformer for Soil Moisture Retrieval From CYGNSS Data

Water Resources Research, Volume 62, Issue 1, January 2026.
Abstract This research introduces a new deep learning (DL) framework, multi‐head self‐attention‐aided vision Transformer (MSA‐ViT), for soil moisture (SM) retrieval using Cyclone Global Navigation Satellite System (CYGNSS) data. We first assess the sensitivity of CYGNSS reflectivity (Γ) $({\Gamma })$ to SM, demonstrating a strong physical linkage ...
Qingyun Yan, Yuhan Chen, Yuanjin Pan, Shuanggen Jin, Weimin Huang   +4 more
wiley   +1 more source

From Detection to Countermeasure: A Review of Key Technologies in Counter‐Unmanned Aerial Vehicle Systems

IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.
ABSTRACT With the rapid proliferation of unmanned aerial vehicles (UAVs) in the military, logistics and public safety sectors, the threat of illegal intrusion, information theft, and security breaches has increased. This paper provides a comprehensive review of recent developments in counter‐unmanned aerial vehicle (counter‐UAV) systems, focussing on ...
Lei Xing, Can Cui, Miao Wang, Chao Xu
wiley   +1 more source

On the effects of clock offset in OFDM-based Passive Bistatic Radar

2013 IEEE International Conference on Acoustics, Speech and Signal Processing, 2013
In Passive Bistatic Radar (PBR) a local communications transmitter is used as an illuminator. A Line Of Sight (LOS) signal is captured to use as a template for radar processing. This may be cleaned via demodulation and remodulation, removing short-delay copies and sensor noise. However differences between the transmitter clock and local clock cause the
Stephen J. Searle, James E. Palmer, Linda M. Davis   +2 more
openaire   +3 more sources

Over‐the‐Air Beam‐Sweeping ISAC in the 5G‐NR FR1 Band: From Single‐Receiver Detection to Multi‐Receiver Angle Estimation

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter presents an over‐the‐air ISAC study in the 5G‐NR FR1 band using an SNR‐based beam‐sweeping sensing approach. In the SIMO scenario, multiple distributed receive nodes are combined with beam sweeping to enable angle estimation under narrowband sub‐6 GHz conditions.
Yuyang Liu, Marios Sardis, Jiaqi Zou, George A. Ropokis, Songlin Sun, Constantinos B. Papadias   +5 more
wiley   +1 more source

Low‐Dimensional Robust Mismatched Filter Design for Passive Bistatic Radar Using 5G NTN Downlink Signals

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter proposes a low‐dimensional robust mismatched filtering method for passive bistatic radar using 5G non‐terrestrial network (NTN) downlink signals, which exploits the OFDM symbol structure to reduce the optimisation dimension and incorporates bounded reference signal uncertainty into the mainlobe preservation constraint.
Ziwei Liu, Shuyi Tang, Bin Lyu, Fulin Liu, Shanshan Zhao, Leiyao Liao, Gengxin Zhang   +6 more
wiley   +1 more source

Passive bistatic noise radar using DVB-T signals

IET Radar, Sonar & Navigation, 2010
This study presents a new approach to passively detect targets using noise-like emitters of opportunity. This method combines the Wiener filtering to achieve clutter rejection and a proposed adaptation to noise-like signals of the amplitude and phase estimation (APES) method.
Raout, Jacques, Santori, Agnès, Moreau, Eric   +2 more
openaire   +2 more sources